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2-20
Making Measurements
Measurements
By varying the Base station Amplitude field (4), you can test the mobile phone’s
receiver sensitivity. Actual results can be compared with the values reported by the
radio.
NOTE If the Base Station amplitude is lowered too much, the radio will lose the call. This
will need to be re-established by increasing the base station amplitude, returning to
the cell control screen, and originating the call before you can continue
measurements.
NOTE Not all phone types support burst-by-burst BER measurements.
OutputRFSpectrum
Measurements
(Available if Option
006, Spectrum
Analyzer, is Fitted)
The Output RF spectrum measurement shows the spectral power (due to the effects
of ramping or modulation) at a specified frequency offset. These are relative
measurements that compare the result at the offset frequency with the value at the
center frequency. You can also view the output RF spectrum trace from this screen.
Method
Select OUT RF SP in the cell control screen.
To make a measurement, do the following:
• Ensure the Freq Offset is set to zero (1), see Figure 2-11 on page 2-21.
• Select Ramp Ref or Mod Ref (2) (depending on whether you want to make a
ramping measurement or a modulation measurement).